Control unit malfunction: Notes
WARNING: This page is about a different car, the 2006 Porsche Cayenne, 2005 Porsche Cayenne, 2004 Porsche Cayenne, and 2003 Porsche Cayenne. However, it is still accessible from the selected car via links, so may be relevant.
This fault causes the power/voltage supply to the servo motor 'A/B', brakes 'A/B', sensors and CAN communication to switch off.